leaf area index 中文意思是什麼

leaf area index 解釋
葉面積系數
  • leaf : n （pl leaves）1 葉；〈集合詞〉葉子；茶葉，煙葉。2 花瓣。3 （書刊等的）一張（兩面）。4 金屬薄片，...
  • area : n. 1. 面積；平地；地面。2. 空地；〈英國〉地下室前的空地。3. 地區，地方；〈比喻〉區域；范圍。
  • index : n （pl es dices ）1 索引。2 指標，標準，標志。3 示[食]指 （＝index finger）。4 指數。5 【印刷】指...
  1. Normalized leaf area index model for summer maize

    夏玉米葉面積指數增長模型的研究
  2. The paper concludes that the changing rate of ndvi of rain forest in tropic is the smallest, the changing curve is smooth, while the changing rate of ndvi of the deciduous broad leaf forest in warm - temperate zone is the largest the change of ndvi is the most conspicuous in winter and spring ( especially in april ) while is not conspicuous in summer and autumn by analyzing the change of ndvi along latitude using the ndvi value of different vegetation types along the same longitude. the vegetation index from warm temperate zone to semitropical zone has obvious transition, while other areas have no distinct change by analyzing the change of ndvi from temperate zone to semitropical zone to tropical zone using ndvi averagejn the same time it is concluded that the sink value in the beginning of the year 1995 is from the influence of the monsoon in east of china by analyzing the ndvi curve of several typical needle leaf forests. the relation between ndvi value and temperature is conspicuous while the relation of precipitation is less or not by analyzing the relation between ndvi and temperature and precipitation finally it can get the conclusion that the change of river area is the smallest, the change of sienna area is the greatest by analyzing two phases of tm data in 1987 and 1997 with rs technic

    利用從同一經度的不同森林類型ndvi值分析，沿緯度方向ndvi變化可得出， ndvi在冬春季變化最明顯（尤其是在4月份最大） ，而在夏季和秋季變化不明顯。利用ndvi均值進行分析，從暖溫帶到亞熱帶到熱帶的變化情況發現，從暖溫帶到亞熱帶ndvi指數形成明顯的階躍，而其它區域沒有太大的變化，同時對幾種典型的針葉林曲線分析可知其年初的凹值源自於我國東部季風的影響。利用ndvi數據分析其與月均溫度與降水的相關性得出與溫度相關性較為顯著，而與降水相關性不顯著或無相關性。
  3. The species richness and diversity index order of coniferous and broad - leaf forest and evergreen broad - leaf forest in different geology plots was as follows : shrub layer > herb layer > tree layer ; in shrub plots, the order was herb layer > shrub layer. in general jsw, jsi and ea index order was herb layer > shrub layer > ree layer. that indicated that the species of tree and shrub in karst area distributing is not even, and the species, which are dominant and adapt to the karst environment are cleaer

    不同地區樣地針闊混交林和常綠闊葉林物種豐富度指數、多樣性指數均表現為灌木層草本層喬木層，而在灌叢樣地，物種豐富度和多樣性指數表現為草本層灌木層；整體上，石灰巖地區樣地jsw 、 jsi和ea指數為草本層灌木層喬木層；砂頁巖地區樣地為灌木層草本層喬木層。
  4. The knowledge model for the dynamics of main development indices includes submodels of suitable development stages, plant height, leaf area index, dry matter accumulation, numbers of fruit branch, square and boll, plant nutrient accumulation

    生育指標動態知識模型包含有適宜生育期、株高、葉面積指數、干物質積累量、果枝和蕾鈴數目，營養物質積累量等。
  5. The knowledge model for the dynamics of main development indices as plant height, leaf area index, dry matter accumulation, numbers of fruit branch, square and boll was developed based on the physiological time and target yield and quality. in addition, the dynamic relationships between plant nutrients and dry matter accumulation was quantified. all these sub - models provide the reference standards for quantitative and dynamic growth diagnosis and management regulation

    進一步根據產量和品質目標構建了株高、葉面積指數、干物質積累量、果枝和蕾鈴數目變化與生理時間之間的動態關系知識模型，初步量化了棉株養分積累量與干物質積累量之間的動態關系，從而為定量化的苗情診斷和管理調控提供了參考標準。
  6. This review focuses on morphological and physiological reactions of fruit tree to water stress. leaf area, root growth and microstructure of leaves and roots were investigated. some physiological and biochemical index of fruit tree leaves and roots under water stress, such as variations of stomatal aperture, photosynthesis, photoinhibition, metabolism of lipoxygenase, content of proline, nuclear acid and endogenous phytohormones, were summarized

    從水分脅迫對果樹葉、根的形態指標及顯微結構，葉片氣孔行為、光合作用、光抑制、活性氧代謝、脂氧合酶代謝、多胺代謝、脯氨酸、核酸代謝、內源激素變化等生理生化方面綜述了近十幾年來的研究成果，為全面研究果樹抗旱機理及進一步制定抗旱措施奠定理論基礎。
  7. Rice yield reached the maximum at a leaf area index of seven to nine in indica - japonica cross variety, and at a leaf area index of about five in japonica variety, respectively

    秈-粳稻雜交品種的葉面積指數為7 ~ 9時水稻產量最高而粳稻品種最佳葉面積指數為5 。
  8. The production of wheat is increased by 9. 6 % under sewage irrigation ; ( 2 ). dry matter and leaf area index of the wheat is much higher during nourishment growth stage, while dry matter and leaf area index of the wheat under fresh treatment is significant lower during productive growth stage ; ( 3 ). heave metal from swage enriched in the soil stratum in the depth of 0 - 30 cm, and the root length under sewage treatment is larger than that under fresh treatment.

    田間試驗表明，在相同試驗條件下，污水灌溉與清水灌溉相比： （ 1 ）污水灌溉可使冬小麥增產9 . 6 ； （ 2 ）作物地上部干物重和葉面積指數，在營養生長階段清水灌溉比污水灌溉值高，而在生殖生長階段清水灌溉比污水灌溉值明顯降低； （ 3 ）污水中營養物質主要富集在0 30cm土層中，在該土層中污水灌溉的小麥根量比清水灌溉的顯著增多。
  9. Temporal variation of plant height, plant cover and leaf area index in inter - cropped area of sichuan, china

    覆蓋度和葉面積指數的時間變化
  10. Taking erectophile type continuous vegetation as a example, authors had done many monte carlo simulations, and established empirical analytic expressions of radiances with component temperature, soil emissivity and leaf area index. empirical analytic expressions were used to construct objective function and genetic algorithm was employed to synchronously retrieve 5 parameters, such as component temperature, soil emissivity and lai, from thermal infrared 2 channels and 2 angles data. many experiments of genetic algorithm inversion from simulated data were conducted, results show that it is very robust to retrieve component temperature using genetic algorithm ; genetic algorithm can cope with uncertainty inversion problem pretty well if full advantage of priori knowledge was taken. comparison between inversion results and ground - truth data has been done. this paper offers a new example to retrieve component temperature from multi - channel, multi - angle thermal infrared data based on the model of directionality of thermal radiance

    在熱輻射方向性規律的基礎上，以喜直型連續植被為例，進行了大量的monte carlo模擬，建立了輻射亮度和組分溫度植被葉面積指數及土壤比輻射率之間的經驗函數關系。採用遺傳演算法，從熱紅外2個波段2個角度數據中，同時反演混合像元組分溫度土壤比輻射率和葉面積指數等5個參數。通過對模擬的觀測數據進行大量的遺傳演算法反演試驗，結果表明，遺傳演算法反演組分溫度非常穩健，在寬松的先驗知識條件下，遺傳演算法可以解決不確定性反演問題。
  11. Research on calculation and spatial scaling of forest leaf area index fro

    森林葉面積指數遙感反演與空間尺度轉換研究
  12. Method for estimating crop leaf area index of china using remote sensing

    全國農作物葉面積指數遙感估算方法
  13. Leaf area index

    葉面積指數
  14. The relationship between relative evapotranspiration and leaf area index and surface soil water content in winter wheat field of north china plain

    華北平原冬小麥相對蒸散與葉面積指數及表層土壤含水量的關系
  15. During the course of model - building, in view of the influence of the corps in greenhouse on microclimate, the input parameters included the leaf area index ( lai ) of crops

    本文在建模過程中，考慮到了室內作物對溫室小氣候的影響，將作物的葉面積指數作為模型的輸入變量。
  16. Based on the experiment data of summer maize in irrigation experimental station of north west a & f university during 2001 ~ 2004, a normalized model between leaf area index ( lai ) and accumulated temperature was developed

    摘要通過對連續4a夏玉米葉面積指數的研究，建立了夏玉米葉面積指數與積溫之間的歸一化模型。
  17. The results showed that both inadequate and excessive nitrogen application accelerated the decreasing process of leaf area index ( lai ) and chlorophyll content at later growth stage, which led to earlier leaf senescence

    結果表明，氮肥用量不足或過量均加速了生長後期葉面積系數及穗葉葉綠素含量的下降進程，使葉片提早衰老，但二者作用機制不同。
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